#screen {
    width: 450px;
    height: 50px;
    margin-top: 10px;
    background-color: #F5F9FA;
    font-size: 22px;
    line-height: 50px;
    text-align: center;
    border-radius: 10px;
}

.backBtn {
    width: 450px;
    height: 50px;
    font-size: 20px;
    color: white;
    background-color: #DFE6AD;
    border: none;
    outline: none;
    border-radius: 10px;

    text-align: center;
    line-height: 50px;
    margin-top: 20px;
}

.backBtn:active {
    background-color: #A49579;
}
